How I Built a Free Password Security Toolkit (And What I Learned)

A few months ago I got frustrated. Every password tool online was either paid, required sign-up, or shady about privacy. So I built my own. Password Giant is a free, fully client-side password toolkit. Everything runs in your browser. Nothing ever touches a server. It includes a strength checker, password generator, weak password detector, common password checker, and entropy calculator. Here is what I learned building it. Most password advice is incomplete. "Use uppercase, lowercase, numbers and symbols" sounds right — but P@ssw0rd1 follows all those rules and gets cracked in 3 hours. What actually matters is entropy, length, and uniqueness. The biggest mistake people make is optimizing password format instead of password habits. A randomly generated 16-character password stored in a password manager beats any clever password you manually create — every time. Passphrases are also seriously underrated. correct-horse-battery-staple has higher entropy than most random-looking passwords a